WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
Position in TWST — Twist Bioscience Corp
CIK 1644956
CHICAGO, IL
Position in TWST
as of Jun 30, 2026
· filed Aug 12, 2026
Position Value
$223,722,230
-$26,694,769 QoQ
Shares Held
2,174,594
-58.7% QoQ
Ownership
3.47%
of shares outstanding
% of Portfolio
0.68%
of 13F equity value
Holder Rank
#10
of 334 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority
Sole 91%
Shared 0%
None 9%
Common Shares in TWST Over Time
Shares Held
Position Value (USD)
Position in Diagnostics & Research
Healthcare · as of Jun 30, 2026WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC holds $929,458,125 across 8 Diagnostics & Research names. TWST ranks #1 (24.1% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | TWST |
Twist Bioscience Corp
This page
|
2,174,594 | $223,722,230 | |
| 2 | GH |
Guardant Health, Inc.
|
1,311,320 | $196,737,339 | |
| 3 | A |
Agilent Technologies, Inc.
|
1,287,265 | $170,987,409 | |
| 4 | IDXX |
Idexx Laboratories Inc /De
|
298,154 | $156,960,191 | |
| 5 | WGS |
GeneDx Holdings Corp.
|
1,400,653 | $96,154,828 | |
| 6 | VCYT |
Veracyte, Inc.
|
1,431,596 | $84,077,633 | |
| 7 | ICLR |
Icon PLC
|
2,589 | $449,735 | |
| 8 | LH |
Labcorp Holdings Inc.
|
1,317 | $368,760 |
All Filings in TWST
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27 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $223,722,230 | 2,174,594 | Shares | Sole | 2026-08-12 | |
| 2026-06-30 | $223,722,230 | 2,174,594 | Shares | Sole | 2026-08-11 | |
| 2026-03-31 | $250,416,999 | 5,269,718 | Shares | Sole | 2026-05-08 | |
| 2025-12-31 | $188,874,487 | 5,954,429 | Shares | Sole | 2026-02-09 | |
| 2025-09-30 | $116,563,843 | 4,142,283 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $143,723,961 | 3,906,604 | Shares | Sole | 2025-07-29 | |
| 2025-03-31 | $149,457,598 | 3,806,867 | Shares | Sole | 2025-05-09 | |
| 2024-12-31 | $137,073,627 | 2,949,723 | Shares | Sole | 2025-02-10 | |
| 2024-09-30 | $157,104,188 | 3,477,295 | Shares | Sole | 2024-11-08 | |
| 2024-06-30 | $156,926,542 | 3,184,386 | Shares | Sole | 2024-08-08 | |
| 2024-03-31 | $120,400,720 | 3,509,202 | Shares | Sole | 2024-05-08 | |
| 2023-12-31 | $130,848,355 | 3,549,874 | Shares | Sole | 2024-02-09 | |
| 2023-09-30 | $72,397,549 | 3,573,423 | Shares | Sole | 2023-11-09 | |
| 2023-06-30 | $73,979,227 | 3,615,798 | Shares | Sole | 2023-08-11 | |
| 2023-03-31 | $30,982,176 | 2,054,521 | Shares | Sole | 2023-05-12 | |
| 2022-12-31 | $48,517,065 | 2,037,676 | Shares | Sole | 2023-02-09 | |
| 2022-09-30 | $69,577,327 | 1,974,385 | Shares | Sole | 2022-11-09 | |
| 2022-06-30 | $94,999,779 | 2,717,385 | Shares | Sole | 2022-08-10 | |
| 2022-03-31 | $82,543,904 | 1,671,606 | Shares | Sole | 2022-05-11 | |
| 2021-12-31 | $124,313,878 | 1,606,330 | Shares | Sole | 2022-02-14 | |
| 2021-09-30 | $128,105,560 | 1,197,584 | Shares | Sole | 2021-11-10 | |
| 2021-06-30 | $94,129,932 | 706,416 | Shares | Sole | 2021-08-12 | |
| 2021-03-31 | $81,247,205 | 655,960 | Shares | Sole | 2021-05-13 | |
| 2020-12-31 | $106,144,818 | 751,255 | Shares | Sole | 2021-02-09 | |
| 2020-09-30 | $22,545,768 | 296,772 | Shares | Sole | 2020-11-06 | |
| 2020-06-30 | $25,268,793 | 557,810 | Shares | Sole | 2020-08-12 | |
| 2020-03-31 | $20,966,565 | 685,630 | Shares | Sole | 2020-05-08 | |
| No filing history on record for this holder in this stock. | ||||||